Poor performance for standalone docker build (clean app)

[nothumbee]

Link to the code that reproduces this issue

https://codesandbox.io/p/devbox/confident-keller-vg6d7s?workspaceId=ws_BPKX6UvVodga6dWUAkdape

To Reproduce

Observed Behavior

• A single visit to the index page (static - just text) causes the server load to spike to ~20% CPU and RAM usage, as observed using htop (mainly process next-server)
• Multiple page refreshes (F5) further increase the load significantly.

Steps to Reproduce

1. Start the application in docker container.
2. Open the index page in a browser.
3. Observe system resource usage in htop (noting ~20% CPU/RAM spike).
4. Continuously refresh the page (press F5 multiple times).
5. Notice a significant increase in load.

Current vs. Expected behavior

Expected Behavior

• The server should handle a single page visit efficiently with minimal resource consumption.
• Load should not spike significantly on multiple refreshes.

Provide environment information

- **Architecture:** x86_64  
- **Operating System:** Ubuntu 24.04 (AWS)  
- **Kernel Version:** `6.8.0-1018-aws #20-Ubuntu SMP Thu Oct 10 18:14:42 UTC 2024`  
- **CPU:**  
  - **Vendor:** AMD (AuthenticAMD)  
  - **Model:** AMD EPYC 7571 (2.2 GHz)  
  - **Cores:** 1 socket, 1 core per socket, 2 threads per core  
- **Memory & Caches:**  
  - **L1d Cache:** 32 KiB  
  - **L1i Cache:** 64 KiB  
  - **L2 Cache:** 512 KiB  
  - **L3 Cache:** 8 MiB  
- **Virtualization:** KVM (Full)  
- **Node.js Version:** `18-alpine3.16`, `18-alpine`  
- **Tested Next.js Versions:**  
  - `13.3.4`  
  - `^13.5.9`  
  - `^14.1.0`  
  - `^15.1.0`
  - both app and pages routers

Which area(s) are affected? (Select all that apply)

Performance

Which stage(s) are affected? (Select all that apply)

Other (Deployed)

Additional context

Additional Notes

• Issue was tested on multiple Next.js versions with similar results.
• Happens both in Pages Router and App Router.